and one of them is bloom energy. they want to put a little power plant in a box literally in your backyard. for nearly a decade, the company had been unusually secretive about its bloom box. but in february 2010, its inventor, k.r. sridhar, invited me to take a look inside his much talked about but never before seen creature. what could this power? >> this could power a u.s. home. average united states home. >> entire house? >> entire house, 24/7, 365. >> something that small? >> the way we make it is in two blocks. this is a european home. the two put together is a u.s. home. >> [chuckling] 'cause we use twice as much energy, is that what you're saying? >> yeah, and this will power four asian homes. >> so four homes in india, your native country. >> absolutely. four to six homes in our country. >> it sounds awfully dazzling. >> it is real. it works. >> he says he knows it works because he originally invented a similar device for nasa. he really is a rocket scientist. >> this invention working on mars would allow the